Merge pull request #86 from alexcrichton/update-build

Update support for being built in rust-lang/rust

Author: alexcrichton

Cargo.toml

@@ -15,6 +15,10 @@ categories = ["command-line-interface"]
 
 [dependencies]
 unicode-width = "0.1.5"
+std = { version = "1.0", package = "rustc-std-workspace-std", optional = true }
 
 [dev-dependencies]
 log = "0.4"
+
+[features]
+rustc-dep-of-std = ['unicode-width/rustc-dep-of-std', 'std']